[llvm] r242558 - MergeFuncs: Transfer the function parameter attributes to the call site

[Arnold Schwaighofer]

Author: arnolds
Date: Fri Jul 17 13:59:08 2015
New Revision: 242558

URL: http://llvm.org/viewvc/llvm-project?rev=242558&view=rev
Log:
MergeFuncs: Transfer the function parameter attributes to the call site

rdar://21516488

Added:
    llvm/trunk/test/Transforms/MergeFunc/apply_function_attributes.ll
Modified:
    llvm/trunk/lib/Transforms/IPO/MergeFunctions.cpp
    llvm/trunk/test/Transforms/MergeFunc/inttoptr-address-space.ll
    llvm/trunk/test/Transforms/MergeFunc/inttoptr.ll

Modified: llvm/trunk/lib/Transforms/IPO/MergeFunctions.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/IPO/MergeFunctions.cpp?rev=242558&r1=242557&r2=242558&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/IPO/MergeFunctions.cpp (original)
+++ llvm/trunk/lib/Transforms/IPO/MergeFunctions.cpp Fri Jul 17 13:59:08 2015
@@ -1361,6 +1361,7 @@ void MergeFunctions::writeThunk(Function
   CallInst *CI = Builder.CreateCall(F, Args);
   CI->setTailCall();
   CI->setCallingConv(F->getCallingConv());
+  CI->setAttributes(F->getAttributes());
   if (NewG->getReturnType()->isVoidTy()) {
     Builder.CreateRetVoid();
   } else {

Added: llvm/trunk/test/Transforms/MergeFunc/apply_function_attributes.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/MergeFunc/apply_function_attributes.ll?rev=242558&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/MergeFunc/apply_function_attributes.ll (added)
+++ llvm/trunk/test/Transforms/MergeFunc/apply_function_attributes.ll Fri Jul 17 13:59:08 2015
@@ -0,0 +1,22 @@
+; RUN: opt -S -mergefunc < %s | FileCheck %s
+%Si = type <{ i32 }>
+
+define void @sum(%Si* noalias sret %a, i32 %x, i32 %y) {
+  %sum = add i32 %x, %y
+  %sum2 = add i32 %sum, %y
+  %sum3 = add i32 %sum2, %y
+  ret void
+}
+
+define void @add(%Si* noalias sret %a, i32 %x, i32 %y) {
+  %sum = add i32 %x, %y
+  %sum2 = add i32 %sum, %y
+  %sum3 = add i32 %sum2, %y
+  ret void
+}
+
+; Make sure we transfer the parameter attributes to the call site.
+
+; CHECK-LABEL: define void @sum(%Si* noalias sret, i32, i32)
+; CHECK: tail call void @add(%Si* noalias sret %{{.*}}, i32 %{{.*}}, i32 %{{.*}})
+; CHECK: ret void

Modified: llvm/trunk/test/Transforms/MergeFunc/inttoptr-address-space.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/MergeFunc/inttoptr-address-space.ll?rev=242558&r1=242557&r2=242558&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/MergeFunc/inttoptr-address-space.ll (original)
+++ llvm/trunk/test/Transforms/MergeFunc/inttoptr-address-space.ll Fri Jul 17 13:59:08 2015
@@ -21,7 +21,7 @@ define internal i8* @func35(%.qux.2585 a
 bb:
 ; CHECK-LABEL: @func35(
 ; CHECK: %[[V2:.+]] = bitcast %.qux.2585 addrspace(1)* %{{.*}} to %.qux.2496 addrspace(1)*
-; CHECK: %[[V3:.+]] = tail call i32 @func10(%.qux.2496 addrspace(1)* %[[V2]])
+; CHECK: %[[V3:.+]] = tail call i32 @func10(%.qux.2496 addrspace(1)* nocapture %[[V2]])
 ; CHECK: %{{.*}} = inttoptr i32 %[[V3]] to i8*
   %tmp = getelementptr inbounds %.qux.2585, %.qux.2585 addrspace(1)* %this, i32 0, i32 2
   %tmp1 = load i8*, i8* addrspace(1)* %tmp, align 4

Modified: llvm/trunk/test/Transforms/MergeFunc/inttoptr.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/MergeFunc/inttoptr.ll?rev=242558&r1=242557&r2=242558&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/MergeFunc/inttoptr.ll (original)
+++ llvm/trunk/test/Transforms/MergeFunc/inttoptr.ll Fri Jul 17 13:59:08 2015
@@ -48,7 +48,7 @@ define internal i8* @func35(%.qux.2585*
 bb:
 ; CHECK-LABEL: @func35(
 ; CHECK: %[[V2:.+]] = bitcast %.qux.2585* %{{.*}} to %.qux.2496*
-; CHECK: %[[V3:.+]] = tail call i32 @func10(%.qux.2496* %[[V2]])
+; CHECK: %[[V3:.+]] = tail call i32 @func10(%.qux.2496* nocapture %[[V2]])
 ; CHECK: %{{.*}} = inttoptr i32 %[[V3]] to i8*
   %tmp = getelementptr inbounds %.qux.2585, %.qux.2585* %this, i32 0, i32 2
   %tmp1 = load i8*, i8** %tmp, align 4